Vacuum pulsator-actuated mechanism



Sept. 18 1923. 1,468,238

J. KING VACUUM PULSATOR ACTUATED MECHANISM Filed May 9, 1922 Patented Sept. 18 1923.

1; JAMES Kinder-AUCKLAND, NEW zEALANDf- 1 VACUUMJQIILSATOReACTUATED,MECHANISM f A Application filed May 9,

To all whom it mag concern: s r Be it known that I, JAMns KING, subject of the King of Great Britain; residing at Hobson Street; Auckland, New"Z eal'and, have invented a new and useful- Improved Vacuum 'Piilsator-Actu'ated Mechanism, of which the following is a specification.

with the object of providing improved mechanism whereby the pulsations'obtained through an alternate connection with a vacuum and' with thefatinospher'e may be employed as the actuating power for the operation of i'eciprocally'moving or like devices. The invention has as its secondary object theoutilizati on of such mechanism to actuate a. pulsator'inthe teat cup clawof a milking machine installation, or other subsidiary pulsator through the Operative control of a master pulsato'r. 1i

In this specification theterm pals-storms used to -denote an appliance by means of which connections are made through a main pipe to a source of vacuum, and with the air in continuous alternation. a

The actuating mechanism devised is illustrated in the. accompanying drawings as adapted to milking machine purposes to opera-tea pulsator'contained' in a claw to wh ch a'set of teat cups are connected to carry on cow milking-operations on thew'ell known principle. A special design "of claw embodyin a pulsator has been devisedztor' use in 'co'mhination with the'inec ha'nism and this also isillustrated injthe drawings; a The whole of "the appliances are thus adapted to be used in'a system o fcowmilk ing under which the ordinary pulsations of the teat cups of eacli set are 'broughtabout through the agency of-pulsato'r apparatus in the claw of that set that is actuated by the operations of a masterpulsa'tor controlling the whole of: the sets of teat cups in the installation. 7 a

The invention will be described in' relation to the drawings, in which f.

Figure liis'an elevation; and Figure 2 a sectional elevation, of the pulsator actuating device.

Figure 3 is an elevation ofthe claw and pulsator combined.

Figure i is a sectional side elevation, and Figure 5 a plan thereof. 7 I Figure 6 is a plan of the top plate of the combined claw-pulsator.

The actuating device, as shown in Figuresf i322. seri inof 559,641.

' land 2. is formed by a cylinder A; one end of whichE-is"closed and is formed with a nipplefittingA bymeans ofwhich connection is made by the'fiexible pipe as between'the cylinder endand the. master pulsator to cause such end; to be "alternately in 1 vacuum and at atmospheric pressure. The This invention has been devised primarilyother end ofthe cylinder is closed by a cover B having air holes '6 therein and also formed with tubular guide 0 extending" therevfrom in a line axially with the cylinder. A

D is placed such'spring extending incom pressioii' between the piston and the closed end of t-he *cylinder and serving to normallyforce the piston away to theother' end 1 of "the cylinder. "This spring D is however, so adjusted as to'bej capable of being overcome by air pressureacting on-the other I a side of the piston "whentheclosed end of the cylinder'is in vacuum. V Thus theworking of the master pulsatorivill"result' in a reciprocatory motion being connects thecylinder'end with vacuum, the

imparted to the piston, as when the pulsator connects the cylinder with airfthe air presi sure on both sides of-the piston'is equalized andthe-spring act'sto force-the piston out 7 again, and so on repeatedly The piston is connected, through'the tubular'guide C at the ylinders outer end, with the mechanism to be actuated through itsinovements.

These means in their adaptation 'to'actuate them'ilkingmachine teat cup claw pulsator are used to reciprocate a pu sator of D slide valve type by mea'ns of'a fine wire 'rod C extending out througl'i the said tubular guide- O' and connected to the slide valve. The wire rod is protected from outside-1 influences; by: being contained :within a rubber tiibingC extendingtroin the guide to the pul'sator claw casing hich also allows for the flexibility of the connection as is-re quired in milking operations The claw as shewnin Figures 3 to 6 is made with aflower compartment E that is provided with four nipple branches F con nected irespectivelyto the milk nipples of the four teat cups, and with a main branch G'that is connected to the milking main so that this compartment is always in order.

above this compartment andsuch plate-lisa formed with a. slide valve way J across its top surface having aport K-in its centre that opens intothe compartment E beneath and a port M on each sideofsuch central port that connects with two passages M leading outwards on opposite sides to nipple tubes 11 made with the cover plate, Two pairs of these tubes M are thus provided and the four are connected to .the pulsator nipples of the respective tea-t cups of the set in the well known way, 7. v

The cover plate is attached to the top of the compartment in any approved manner such as toallow for its removal for cleaning purposesand replacement at will. In the drawings, the plate is. shewn with a downwardly depending female threaded socket NI into the bottom end of which the set, screw N'f passing .up through the claw bottom screws so as to. bind the two parts togetherl, a Q a A cover O isfixed to enclose the top and two ends of .slide way and the space enclosed thereby is open to the atmosphere at all times through apertures 0 v w 7 p A slide valve P is provided and'fitted into the sli'de way J and v .isso made that in its reciprocations it' will alternately connect each. side port Mwith the central port K, while uncovering the other. Consequently at one limit of its movements the two nipples M atone end will be connected to vacuum through the main compartment E beneath, while ,the other two are open to atmosphere, and at the other limit the connections are reversed. The teat cups will therefore receive their pulsations in pairs and inreverse The slide valve P, isconnected to and ope'uatedby the wire rod C;hefore mentioned, its tubular protection 0 being tted on to atubular guide R formed on the valve covet, i

The air exhausted fromthe teat cups on I each pulsation thereofpasses into the milking compartment E and milk tube toaid the flow of millgto themain. I

Y The combination of apparatus 'thus.pros vided allows. for the reciprocations of the piston D in the cylinder A being conveyed through'the fine wire rod C' to the slide valve of'the claw pulsator to reciprocate it correspondingly; The nature oft-he connec tions under which the different parts are ment being conveyed no matter what the relative positions of thepart may be. Moreover the slide valve in its operations will he kept upon its seat" in the slide way owing to the permanent connection of its underside with the milking vacuum and the resultmay .be placed during the milking operations. v-

I claim '1. A -vac'uum pulsator actuated device to atmosphere, a piston mounted to recipra cate' withinsuch cylinder, aspiring acting on such piston to forceitto the open end of v the cylinder and means for connecting the connected by the ordinary flexible Jipes used in 'milklngmachin'e'ry ensures of t is movea cylinder at one end connected tosuch pulsator andiat the other end open piston with the appliance to be operated and a milking machinete'at cup, claw havin aslide valve form of pulsator mounte' therein and connectedto the piston ofthe aforesaid device soas to be operated by'its reciprocations.

2. In combination, a pulsator apparatus, a cylinden'having one end connected with suchpulsator apparatus and its other end open to atmosphere, a piston mounted to reciprocate within such cylinder. and a spring serYingtO force the pistonnormally .to the openend ofthe cylinder, a teat cup claw having a vacuum connectedechamber with four branch pipesextending therefrom,

a cover plate fitted on such chamber formed 7 with a central port communicating with such chamber and two side ports each connecting with two branch pipes extending from the cover plate,a slide valve-mounted on the cover plate to, reciprocatethereon to connect the central port with ,each side port while uncovering the otherside port, in turn, and aconnection between the slide valve and the said piston, substantiallyas and for the purposes specified, i I a In testimonywhereof I aflix my signature.

' JAMES KING.-

Witne se 4 t "DAVID Bnown' HUTTON,'

EDMUND HADLUF. HoDGKINsoN, I 

